Questions tagged [cryogenics]
Concerned with temperatures below 123 K (-150 deg C), widespread usage in gas liquefaction and storage, vacuum science and superconductivity
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Why do cryogenic temperatures usually result in higher conductivity, even (sometimes) superconductivity, but otherwise nonconductive Wigner crystals?
Wigner crystals are all the rage in the news, since around the start of the pandemic...
But at what temperatures (and pressures?) do these cold materials create a nonconducting 'Wigner crystal' rather ...
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Work done by gas and it's limits
So I have read about how when pressurised gas does work, it decreases in temperature (turbo expanders, Claude liquefaction etc.). How exactly does that work? The more work a gas does, the more it ...
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How can you rapidly warm a large body uniformly? [closed]
Given a very non-homogenous large object (mainly water) that's vitrified (cooled down without ice formation) and stored in liquid nitrogen, how do you heat it up to room temperature without ice ...
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Calculate new equilibrium of cryogenic LNG tank after addition of new cold LNG
Disclaimer: I am not a physicist, but I am trying to unravel this problem and it is interesting me more and more the more I work and think about it.
I have the following problem:
There is a Cryogenic ...
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Understanding how the Nernst statement of the Third Law implies the Planck statement
I am reading Callen who, up to and including where I am at (Chapter 11), treats thermodynamics as a classical theory with only the maximum entropy postulate for isolated systems sprinkled in as a &...
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Linear thermal expansion of a rod at different end temperatures with variable thermal expansion
I am trying to wrap my head around a thought experiment.
If I have a thin rod of a uniform material (304SS for example) and hold one end at a relatively high temperature (say 250K) and the other end ...
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Cryostage solid state active insulation
I am designing an ultra-high vacuum cryostage for a fluorescence microscope. The cold finger is cooled by a closed loop liquid nitrogen system. The base of the stage is maintained at room temp with ...
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Labeling system in UHV, cryogenics
So I am currently working with a cryo - fridge with a lot of cables in there. So the goal would be to get some labeling on the cables. An issue with just putting some plastic pieces with numbers in ...
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Cryogenic and vacuum safe cable labeling or tagging
Not the most in depth of physics questions, yet this feels like the right community for trying to crowd-source this type of expertise.
Essentially it is a question for those of you experienced with ...
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Cryogenic microscope objective
Are the Attocube LT-APO cryogenic objectives with a numerical aperture of 0.82 actually suitable for work with single quantum emitters at liquid helium temperatures? If not, are there any other ...
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How do we do experiments on gases at zero Kelvin?
We say that at temperatures very close to absolute zero (nano or pico Kelvin) there is no gas, so how do we do experiments on gases at zero Kelvin, and why is Bose-Einstein described as a gas?
1995 – ...
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Thermogenic transfer of cryogenic gases
Is there any chemicals or substances that can be gases or liquids at around 5 kelvins, and that can also have a high thermal conductivity, at least 3 w/mk
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Isochoric gas process taking heat from surrounding environment
this is a $pV$-diagram of Stirling cooler:
A => B and C => D processes are isothermal, co temperature in D is same as temperature after cooling on high temperature side. Although, temperature ...
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Which overheating equipment terminated the record-breaking fusion reaction at the JET reactor?
It has been reported in Nature that in December 2021 the Joint European Torus (JET) fusion reactor near Oxford in the UK sustained a 5 second fusion reaction and produced a new record for fusion ...
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Hydrostatic pressure of helium gas in a closed volume below 4K
I have filled a tight container of a fixed volume with natural helium gas (helium 4) and a sample at room temperature and atmospheric pressure. Now I cool the container down to temperatures between ...
